* {
    padding: 0;
    margin: 0;
}

.header {
    height: 90px;
    display: flex;
    align-items: center;
}

.header img {
    height: 50px;
    margin-left: 250px;
}

.header ul {
    margin-left: 1000px;
}

.header ul li {
    list-style-type: none;
    cursor: pointer;
}

.header ul li:hover {
    color: #FF4400;
}



.main {
    position: relative;
}

.main img {
    height: 600px;
}

.main .user {
    width: 350px;
    height: 350px;
    background-color: white;
    position: absolute;
    top: 50%;
    left: calc(75% + 10px);
    /* 将左侧偏移设置为四分之三加上一定的像素值，此处假设为10px */
    transform: translate(-50%, -50%);
}

.main .user .name {
    margin: 30px 35px;
    font-size: 20px;
}

.main .block {
    width: 20px;
    height: 350px;
    background-color: white;
    position: absolute;
    top: 50%;
    left: calc(85% + 10px);
    /* 将左侧偏移设置为四分之一加上一定的像素值，此处假设为10px */
    transform: translate(-50%, -50%);
}